Choose the correct option - Transformations which have only Input/Output ports
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Expression
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Router
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Lookup
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Aggregator
A
Correct answer
Explanation
Expression transformation is a passive transformation that only has input and output ports - no input/output or output/input ports like Active transformations. Router has input, output, and input/output ports for routing data. Lookup has input/output and output ports for returning lookup results. Aggregator has input/output and output ports for group calculations.